Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534626
Zengwei Liu, H.-W. Deng, Xiaoxiang He
A simple and compact microstrip-fed ultra wideband (UWB) printed monopole antenna with band-notched performance is proposed in this paper. The antenna is composed of a square ring with a T-shaped strip, so that the antenna occupies about 7.68GHz bandwidth covering 3.08-10.76GHz with expected band rejection of 5.06GHz to 5.89GHz. A quasi- omnidirectional and quasi-symmetrical radiation pattern is also obtained. This kind of band-notched UWB antenna requires no external filters and thus greatly simplifies the system design of UWB wireless communication.
{"title":"A New Band-Notched UWB Printed Monopole Antenna","authors":"Zengwei Liu, H.-W. Deng, Xiaoxiang He","doi":"10.1109/GSMM.2008.4534626","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534626","url":null,"abstract":"A simple and compact microstrip-fed ultra wideband (UWB) printed monopole antenna with band-notched performance is proposed in this paper. The antenna is composed of a square ring with a T-shaped strip, so that the antenna occupies about 7.68GHz bandwidth covering 3.08-10.76GHz with expected band rejection of 5.06GHz to 5.89GHz. A quasi- omnidirectional and quasi-symmetrical radiation pattern is also obtained. This kind of band-notched UWB antenna requires no external filters and thus greatly simplifies the system design of UWB wireless communication.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126950394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534618
D. Zhu, Jin-ping Xu
In the design of millimeter wave voltage control oscillators (VCOs), it is fairly important to establish the relationship between load impedance looking outward from active device and the impedance of varactor diode, so that load impedance can be related to the variation of varactor diode's impedance due to changing its dc bias voltage. In this paper, self impedance of radial line transformer (RLT) mounted on Gunn device has been calculated with mode matching methods at first. Numerical results of self impedance with respect to various circuit parameters are presented. General rules concerning self impedance by virtue of various structural parameters of the VCO have been deduced. Furthermore, an equivalent two-port network is presented in terms of impedance matrix, which is constructed by self impedance embedded on Gunn device and mutual impedance of two RLTs which has been calculated previously. The equivalent two-port network, which describes the relationship between load impedance and impedance of the varactor diode, is useful for the design and testing of the millimeter wave varactor VCO with two in-line RLTs.
{"title":"Equivalent Networks of Two In-line RLTs in Millimeter Wave VCO Waveguide Cavities","authors":"D. Zhu, Jin-ping Xu","doi":"10.1109/GSMM.2008.4534618","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534618","url":null,"abstract":"In the design of millimeter wave voltage control oscillators (VCOs), it is fairly important to establish the relationship between load impedance looking outward from active device and the impedance of varactor diode, so that load impedance can be related to the variation of varactor diode's impedance due to changing its dc bias voltage. In this paper, self impedance of radial line transformer (RLT) mounted on Gunn device has been calculated with mode matching methods at first. Numerical results of self impedance with respect to various circuit parameters are presented. General rules concerning self impedance by virtue of various structural parameters of the VCO have been deduced. Furthermore, an equivalent two-port network is presented in terms of impedance matrix, which is constructed by self impedance embedded on Gunn device and mutual impedance of two RLTs which has been calculated previously. The equivalent two-port network, which describes the relationship between load impedance and impedance of the varactor diode, is useful for the design and testing of the millimeter wave varactor VCO with two in-line RLTs.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127266241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534643
Wang Xiaoqian, F. Enxin
This paper presents a novel V-slot DGS (defected ground structure), which provides a high-Q band rejection. Compared to conventional DGS, the V-slot DGS not only provides a high Q factor, but also has a simple shape and a steep slope of band edge. The resonance frequency, attenuation, bandwidth and Q factor are dependent on the structural parameters of the V-slot DGS. A single V-slot DGS can provide Q factor of more than 50. The band rejection filter with three cascaded V-slot DGS provides Q factor of 19.86 and rejects the frequency from 4.31 to 4.41 GHz with more than 30-dB suppression. Simulation results show that the proposed DGS filter offers significant improvement of the Q factor and size reduction when compared with the conventional DGS filters.
{"title":"A Novel High-Q Band Rejection Filter by Using V-Slot Defected Ground Structure","authors":"Wang Xiaoqian, F. Enxin","doi":"10.1109/GSMM.2008.4534643","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534643","url":null,"abstract":"This paper presents a novel V-slot DGS (defected ground structure), which provides a high-Q band rejection. Compared to conventional DGS, the V-slot DGS not only provides a high Q factor, but also has a simple shape and a steep slope of band edge. The resonance frequency, attenuation, bandwidth and Q factor are dependent on the structural parameters of the V-slot DGS. A single V-slot DGS can provide Q factor of more than 50. The band rejection filter with three cascaded V-slot DGS provides Q factor of 19.86 and rejects the frequency from 4.31 to 4.41 GHz with more than 30-dB suppression. Simulation results show that the proposed DGS filter offers significant improvement of the Q factor and size reduction when compared with the conventional DGS filters.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127474042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534634
Jin Wang, Yongjun Zhao, Zhigang Wang
A new kind of noise subspace based direction-of-arrival (DOA) estimation method is proposed. Unlike the MUSIC algorithm , the novel MUSIC like method use signal subspace estimated by multi-stage Wiener filter (MSWF) instead of array steering vectors for orthogonality test. Simulation shows that the proposed method offers improvements in precision and resolution performance for signals with low SNR, compared to MUSIC and ESPRIT algorithms.
{"title":"A MUSIC like DOA estimation method for signals with low SNR","authors":"Jin Wang, Yongjun Zhao, Zhigang Wang","doi":"10.1109/GSMM.2008.4534634","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534634","url":null,"abstract":"A new kind of noise subspace based direction-of-arrival (DOA) estimation method is proposed. Unlike the MUSIC algorithm , the novel MUSIC like method use signal subspace estimated by multi-stage Wiener filter (MSWF) instead of array steering vectors for orthogonality test. Simulation shows that the proposed method offers improvements in precision and resolution performance for signals with low SNR, compared to MUSIC and ESPRIT algorithms.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134457699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534621
Cai Xuanwei, Tian Yu, Tong Ling
Via hole is frequently applied in multilayer microwave circuit interconnection. As the discontinuity of via, it causes more reflection and radiation when frequency becomes higher. Therefore, electromagnetic characterization analysis of via is important in the design of microwave circuit. The paper presents the electromagnetic modeling method of via based on the principle of microwave network in multilayer microwave circuit. To achieve the simplification, the authors decompose the overall structure into several substructures, then, Matrix-Penciled Moment Method and microwave network theory are used to analyze each substructure.
{"title":"Electromagnetic Characterization Analysis of the Connecting Structure of the Via in Multilayered Microwave Circuit","authors":"Cai Xuanwei, Tian Yu, Tong Ling","doi":"10.1109/GSMM.2008.4534621","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534621","url":null,"abstract":"Via hole is frequently applied in multilayer microwave circuit interconnection. As the discontinuity of via, it causes more reflection and radiation when frequency becomes higher. Therefore, electromagnetic characterization analysis of via is important in the design of microwave circuit. The paper presents the electromagnetic modeling method of via based on the principle of microwave network in multilayer microwave circuit. To achieve the simplification, the authors decompose the overall structure into several substructures, then, Matrix-Penciled Moment Method and microwave network theory are used to analyze each substructure.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131943752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534588
H. Zheng, G.S. Cao, X. Ma, Y. Liu
A technique combining the pseudospectral time- domain with the alternating-direction implicit method to solve three dimensional electromagnetic problems is investigated. The proposed method with a suitable well-posed perfectly matched layer is developed as an accurate and flexible tool for the simulation of electromagnetic wave propagation and scattering in conductive and inhomogeneous media. This approach allows for an accurate treatment of curved geometries with a high efficiency. Numerical results show an excellent agreement with experiments for the prototyping of a patch-fed dielectric rod antenna at V-band.
{"title":"Unconditional Stability Pseudospectral Time-Domain Method for Analysis of 60 GHz Dielectric Rod Antenna","authors":"H. Zheng, G.S. Cao, X. Ma, Y. Liu","doi":"10.1109/GSMM.2008.4534588","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534588","url":null,"abstract":"A technique combining the pseudospectral time- domain with the alternating-direction implicit method to solve three dimensional electromagnetic problems is investigated. The proposed method with a suitable well-posed perfectly matched layer is developed as an accurate and flexible tool for the simulation of electromagnetic wave propagation and scattering in conductive and inhomogeneous media. This approach allows for an accurate treatment of curved geometries with a high efficiency. Numerical results show an excellent agreement with experiments for the prototyping of a patch-fed dielectric rod antenna at V-band.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"114 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114015406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534593
Ming-Tang Chen
This talk is to briefly illustrate the correlation between the advance in millimeter-wave technology and the recent rapid progress in modern cosmology. An on-going instrumentation project, the array for microwave background anisotropy (AMiBA) is used as a working example to address the connection between the technology and its scientific exploration.
{"title":"From Millimeter-wave Technology to Cosmology - The AMiBA Telescope","authors":"Ming-Tang Chen","doi":"10.1109/GSMM.2008.4534593","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534593","url":null,"abstract":"This talk is to briefly illustrate the correlation between the advance in millimeter-wave technology and the recent rapid progress in modern cosmology. An on-going instrumentation project, the array for microwave background anisotropy (AMiBA) is used as a working example to address the connection between the technology and its scientific exploration.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127651086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534607
Dawei An, Xiang Li, Jinchao Mou, X. Lv
This paper announced a new type of bonding interconnect-vertical bonding interconnect. Bonding interconnect is the critical technique for realizing the interconnection of microwave chip. The height, distance, number of wires and joint space of bonding interconnect have important effects on its microwave characteristics. In this paper, commercial 3D electromagnetic analysis software HFSS , microwave circuit design software ADS and Agilent vector network analyzer were used to model, simulate and optimize for the microwave characteristics of bonding interconnect, and produce the model, experimental results shown in this paper.
{"title":"Modeling and Characteristic of the Vertical Bonding-Wire Interconnection in Ka-band","authors":"Dawei An, Xiang Li, Jinchao Mou, X. Lv","doi":"10.1109/GSMM.2008.4534607","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534607","url":null,"abstract":"This paper announced a new type of bonding interconnect-vertical bonding interconnect. Bonding interconnect is the critical technique for realizing the interconnection of microwave chip. The height, distance, number of wires and joint space of bonding interconnect have important effects on its microwave characteristics. In this paper, commercial 3D electromagnetic analysis software HFSS , microwave circuit design software ADS and Agilent vector network analyzer were used to model, simulate and optimize for the microwave characteristics of bonding interconnect, and produce the model, experimental results shown in this paper.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128572940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534549
Y. Wang, Y.F. Zhu, N. Jiang, Y.S. Chi, F. Huang
A 5.2-GHz quadrature LC voltage controlled oscillator (VCO) has been designed in a standard 0.18-mum CMOS process. Digitally controlled switch array is used in this design to achieve sufficient frequency tuning range and low phase noise. The oscillation frequency can be tuned from 5.03 GHz to 5.32 GHz through the 2-bit switch array. With the selection of an optimal on-chip inductor, the quadrature VCO achieves a single-sideband phase noise of -116 dBc/Hz at 1.0 MHz offset frequency consuming total 9.8 mA of current from a 1.5 V power supply.
{"title":"A Low hase Noise Quadrature LC-VCO in 0.18-μm CMOS Technology","authors":"Y. Wang, Y.F. Zhu, N. Jiang, Y.S. Chi, F. Huang","doi":"10.1109/GSMM.2008.4534549","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534549","url":null,"abstract":"A 5.2-GHz quadrature LC voltage controlled oscillator (VCO) has been designed in a standard 0.18-mum CMOS process. Digitally controlled switch array is used in this design to achieve sufficient frequency tuning range and low phase noise. The oscillation frequency can be tuned from 5.03 GHz to 5.32 GHz through the 2-bit switch array. With the selection of an optimal on-chip inductor, the quadrature VCO achieves a single-sideband phase noise of -116 dBc/Hz at 1.0 MHz offset frequency consuming total 9.8 mA of current from a 1.5 V power supply.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117000706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534670
Qingquan Hong
Based on the electric field intensity and magnetic induction intensity of electric dipole & electric quadrupole, and the power density of magnetic dipole and electric quadruple in magnetic anisotropic medium, the radiation power of electric quadrupole in magnetic anisotropic medium can be achieved in anisotropic spherical coordinate system by spherical surface integration. By coordinate transformation, the radiation power of electric quadrupole in rectangular coordinate system are obtained. The theoretical results indicate that the radiation power is correlative with magnetic conductivity of the anisotropic medium. Our results offer a theoretical basis for measuring the radiation power of electric quadrupole in magnetic anisotropic medium.
{"title":"Radiation Power of Electric Quadrupole in Magnetic Anisotropic Medium","authors":"Qingquan Hong","doi":"10.1109/GSMM.2008.4534670","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534670","url":null,"abstract":"Based on the electric field intensity and magnetic induction intensity of electric dipole & electric quadrupole, and the power density of magnetic dipole and electric quadruple in magnetic anisotropic medium, the radiation power of electric quadrupole in magnetic anisotropic medium can be achieved in anisotropic spherical coordinate system by spherical surface integration. By coordinate transformation, the radiation power of electric quadrupole in rectangular coordinate system are obtained. The theoretical results indicate that the radiation power is correlative with magnetic conductivity of the anisotropic medium. Our results offer a theoretical basis for measuring the radiation power of electric quadrupole in magnetic anisotropic medium.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115378047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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